<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
        class="title-item"
        :class="{active : index === currentIndex}"
        @click="titleClick(index)"
        >
        {{item}}
        </div>
      </div>

    </nav-bar>
  </div>

</template>

<script>
  import NavBar from "components/common/navbar/NavBar"
  export default {
    name :"DetailNavBar",
    data(){
      return {
        titles :['商品','参数','评论','推荐'],
        currentIndex : 0
      }
    },
    methods:{
      titleClick(index){
        console.log("你点击了navbar")
        this.currentIndex = index;
        this.$emit("titleClick",index);
      },
      backClick(){
        this.$router.back()
      }
    },
    components:{
      NavBar
    }
  }
</script>

<style scoped>
  .title{
    display: flex;
  }
  .title-item{
    flex: 1;
    font-size: 13px;
  }
  .active {
    color: var(--color-high-text);
  }
  .back img{
    margin-top: 12px;
  }
</style>
